@inna - if you want to improve the performance of your one piece harness you could install (or have installed) a pair of Absolute Harmony RCA's from KLE Innovations.
https://kleinnovations.com/kle-innovations-klei-products/klei-harmony-plug/
They are probably the best RCA's money can buy
You will hear more clarity, improved imaging, deeper bass and faster dynamics.
I have tried the other Harmony models, but the Absolute Harmony are extremely good and well worth the investment.
Regards - Steve
https://kleinnovations.com/kle-innovations-klei-products/klei-harmony-plug/
They are probably the best RCA's money can buy
You will hear more clarity, improved imaging, deeper bass and faster dynamics.
I have tried the other Harmony models, but the Absolute Harmony are extremely good and well worth the investment.
Regards - Steve